JeecgBoot与MongoDB集成实战文档

1. 坐标引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

2. 升级积木报表
   jeecgboot2.4.6/3.0等版本集成mongodb会报mongoTemplate错误，官方已经提供了解决方案，将积木报表升级到最新版即可。

<dependency>
    <groupId>org.jeecgframework.jimureport</groupId>
    <artifactId>jimureport-spring-boot-starter</artifactId>
    <version>1.4.2</version>
</dependency>

之后在application-dev.yml文件中，加入mongoDb的配置项

spring:
  data:
    mongodb:
      uri: mongodb://localhost:27017/springboot-db

3. 创建实体类

package org.jeecg.modules.mongodb.entity;

import org.springframework.data.annotation.Id;

public class Customer {

    @Id
    public String id;

    public String firstName;
    public String lastName;

    public Customer() {}

    public Customer(String firstName, String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }

    @Override
    public String toString() {
        return String.format(
                "Customer[id=%s, firstName='%s', lastName='%s']",
                id, firstName, lastName);
    }

}

4. 创建Repository

package org.jeecg.modules.mongodb.dao;

import org.jeecg.modules.mongodb.entity.Customer;
import org.springframework.data.mongodb.repository.MongoRepository;

import java.util.List;

public interface CustomerRepository extends MongoRepository<Customer, String> {

     Customer findByFirstName(String firstName);
     List<Customer> findByLastName(String lastName);

}

5. 测试用例
   用两种方式测试mongoDB，分别为MongoRepository和MongoTemplate

package org.jeecg.modules.mongodb;

import org.jeecg.common.api.vo.Result;
import org.jeecg.modules.mongodb.dao.CustomerRepository;
import org.jeecg.modules.mongodb.entity.Customer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;


/**
 * 测试mongodb
 */
@RestController
@RequestMapping("/mongo")
public class MongoController {

    @Autowired
    private MongoTemplate mongoTemplate;
    @Autowired
    private CustomerRepository repository;

    @GetMapping("/test1")
    public Result<?> TestMongoDb(){
        Map<String,String> map = new HashMap<>();
        map.put("jeecg","mongodb-jeecg");
        mongoTemplate.insert(map, "testMongoDb");

        return Result.OK("存入成功");
    }

    @GetMapping("/test2")
    public Result<?> TestMongoDb2(){
        repository.deleteAll();

        // save a couple of customers
        repository.save(new Customer("Alice", "Smith"));
        repository.save(new Customer("Bob", "Smith"));

        // fetch all customers
        System.out.println("Customers found with findAll():");
        System.out.println("-------------------------------");
        for (Customer customer : repository.findAll()) {
            System.out.println(customer);
        }
        System.out.println();

        // fetch an individual customer
        System.out.println("Customer found with findByFirstName('Alice'):");
        System.out.println("--------------------------------");
        System.out.println(repository.findByFirstName("Alice"));

        System.out.println("Customers found with findByLastName('Smith'):");
        System.out.println("--------------------------------");
        for (Customer customer : repository.findByLastName("Smith")) {
            System.out.println(customer);
        }

        return Result.OK("存入成功");
    }

}

7. 测试结果
   测试后的数据库截图